[b]To scientists walked into a restaurant.
Waiter:wah do I offer the two of you
1st scientist:Give me h2o
2nd scientist: give me h2o too
waiter:OK
The 1st scientist drank and survived while the 2nd scientist drank and died...
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wah do u think caused d death of the second scientist ....*"only science student can get it**[/b]